<template>
    <div class="tabs">
        <el-tag
            v-for="(item, index) in tags"
            :key="item.path"
            :closable="item.name !== 'home'"
            :effect="$route.name === item.name ? 'dark' : 'plain'"
            @click="changeMenu(item)"
            @close="handleClose(item, index)"
            size="small"
            type="success"
            >
            {{ item.label }}
        </el-tag>
    </div>
</template>
<script>
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CommonTag',
  data () {
    return {}
  },
  computed: {
    ...mapState({
      tags: state => state.tab.tabsList
    })
  },
  methods: {
    ...mapMutations(['closeTag']),
    // 点击tag跳转的功能
    changeMenu (item) {
      // console.log(item)
      if (this.$route.name !== item.name) {
        this.$router.push({ name: item.name })
      }
    },
    // 点击tag删除的功能
    handleClose (item, index) {
      // 调用store中的mutation
      this.closeTag(item)
      const length = this.tags.length
      // 删除之后的跳转逻辑
      if (item.name !== this.$route.name) {
        return
      }
      // 表示的是删除的最后一项
      if (index === length) {
        this.$router.push({
          name: this.tags[index - 1].name
        })
      } else {
        this.$router.push({
          name: this.tags[index].name
        })
      }
    }
  }
}
</script>
<style lang="less" scoped>
.tabs {
    padding:5px 20px;
    .el-tag {
        margin-right: 15px;
        cursor: pointer;
    }
}
</style>
